According to ESPN's Ben Goessling, Peterson didn't have his helmet when the Vikings returned to practice outdoors Monday afternoon. While AP did take part in the Vikings' walk-through Monday morning, Goessling notes the three-time rushing champion is still nursing a slight hamstring strain.

ADVERTISEMENT

Thanks for watching!

Peterson also sat out practices on both Saturday and Sunday.

Following the team's workout on Saturday, Vikings coach Mike Zimmer told reporters they're just being cautious with him.

https://twitter.com/Vikings/status/759531858115911680

"The week before (camp), he was working out (and) pulled his hammy a little bit," said Zimmer. "He can do things, he just can't turn it all the way loose. We're just being careful with him."

Patterson shoulder injury not serious

While Peterson participated in the morning walk through, Patterson did not. Though the injury to his shoulder is also not thought to be serious.